53215207 has 2 divisors, whose sum is σ = 53215208. Its totient is φ = 53215206.

The previous prime is 53215199. The next prime is 53215229. The reversal of 53215207 is 70251235.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53215207 - 2³ = 53215199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53215247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26607603 + 26607604.

It is an arithmetic number, because the mean of its divisors is an integer number (26607604).

Almost surely, 2^53215207 is an apocalyptic number.

53215207 is a deficient number, since it is larger than the sum of its proper divisors (1).

53215207 is an equidigital number, since it uses as much as digits as its factorization.

53215207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 53215207 is about 7294.8753930413. The cubic root of 53215207 is about 376.1363032877.

The spelling of 53215207 in words is "fifty-three million, two hundred fifteen thousand, two hundred seven".